class_docstr: MutualFriends dataset.
docstr: Use DialogTeacher act but set id to "Teacher" for intro message.
docstr_tok: ["Use","DialogTeacher","act","but","set","id","to","``","Teacher","''","for","intro","message","."]
code: def act(self):
      """
      Use DialogTeacher act but set id to "Teacher" for intro message.
      """
      reply = super().act()
      if reply.get("text", "").startswith(
          "You have the following friends"
      ):
          reply["id"] = "Teacher"
      return reply
  
file_path: ParlAI/parlai/tasks/mutualfriends/agents.py
imports: from parlai.core.teachers import DialogTeacher
  from parlai.utils.io import PathManager
  from .build import build
  import json
  import os
label_desc: Use image node_id 2 for calling the DefaultTeacher obj's underlying member method code with example usage: obj.act() and returns: reply